We investigate the information theoretic properties of KalmanBucy filters in continuous time, developing notions of information supply, storage and dissipation. By introducing a concept of energy, we develop a physical analogy in which the unobservable signal describes a statistical mechanical system interacting with a heat bath. The abstract ‘universe’ comprising the signal and the heat bath o...

The marine surveying is one of the branches of geomatics, and the sea navigational affairs project construction belongs to the marine surveying application category. The advent of GPS technology creates a new hightech avenue for marine surveying. This paper mainly discussed the application of GPS-RTK technologies in marine surveying. Taking the project of Yangkou manmade island in Nantong city ...

Mangrove is an important indicator of biodiversity (Feoli, 2001), its conservation is very important to protect the ecological balance of sea and coastline. More than 90% of the mangrove vegetation species of China in Hainan, and they are about half of the world. But, in recent years, some of mangrove forests haven't been protected well, and result in decreasing. How to monitor the dynamic chan...

Hazard analysts and risk managers of natural perils, such as earthquakes, landslides and floods, need to access information from sensor networks surveying their regions of interest. However, currently information about these networks is difficult to obtain and is available in varying formats, thereby restricting accesses and consequently possibly leading to decision-making based on limited info...

Abstract Contract-based design is a promising methodology for taming the complexity of developing sophisticated systems. A formal contract distinguishes between assumptions , which are constraints that designer component puts on environments in can be used safely, and guarantees promises asks from team implements component. theory contracts formalized as an interface supports composition refine...

LIDAR is relatively new in the commercial market for remote sensing of topography and it is difficult to find objective reporting on the accuracy of LIDAR measurements in an applied context. Accuracy specifications for LIDAR data in published evaluations range from 1 to 2 m root mean square error (RMSEx,y) and 15 to 20 cm RMSEz. Most of these estimates are based on measurements over relatively ...